Ventilator.



No. 676,262.v Patented June Il, |901.

W. B. JUHNSDN.

VENTILATOB.

(Application filed Mar. 5, 1901.)

(No Model.)

r n unnm's vertus cov. momur NITED STATES PATEN VENTILATO R.

SPECIFICATION forming part of Letters Patent No. 676,262, dated June 11, 190i.

Application led March 5, 1901. Serial No. 49,674. (No model.) v

To all whom it may concern.-

Be it known that I, WILLIAM BURGELAND JOHNSON, a subject 0f the King of Great Britain, residing at Liverpool, in the county of Lancaster, England, have invented new and useful Improvements in Ventilators, of which the following is a specification.

The objects of the invention are to provide a ventilator by which when open or partly open air entering a room may be directed toward certain points and which when closed will present a :Hush or level surface to the interior of the room without ledges or recesses whereon dust may collect. I attain these o'bjects byappliances such as are illustrated in the accompanying drawing, which is a longitudinal section of a ventilator constructed according to my invention.

On the drawing, or b c d are vanes or plates fitted Within an opening or air passage e through the Wall f of the room or space to be ventilated. The vanes a b are preferably iixed to pieces h, placed at each side of and movable into or out of a box vl, so that such side pieces and the vanes may be easily removed for cleaning. The vanes connect the side pieces h rigidly together. The box i is fitted into the opening e in the Wall. The vane c is not fixed by its ends to the side pieces It, but is supported by brackets or the like o from the vane b, so that the ends of the vane o are clear of the side pieces h, as hereinafter described. The Vane d is provided at the sides with arms 7s, pivoted to the sides h at Z. The position of the pivot Z is so arranged relatively to the plane of the vane d that when it is desired to completely close the venticlosed against a vertical stop or closing piece or plate n, secured to the side pieces h and flush with the outer face of the box t. The' yvane d may be retained in any desired position between closed and full open by means of any usual frictional device or catch.

The liush front of the vane d allows of ornamentation, so as to present a pleasing appearance when the ventilator is closed.

' What I claim, and desire to secure by Letters Patent, is

In a ventilator the combination with an airpassage of a dat vane secured to arms pivoted at the sides of the passage at one end thereof and adapted in conjunction with a vertical stop-plate to close the air-passage, independent vanes Iittedwithin the passage adjacent to the flat-armed vane, at least one of such vanes being suspended from the vane above it and clear of the arms of the flat vane `substantially as described.

WILLIAM BUR-GELA ND JOHNSON.

Vitnesses E. OWEN, M. HARRIS. 

